Problem Scenario 61 : You have been given below code snippet.

val a = sc.parallelize(List("dog", "salmon", "salmon", "rat", "elephant"), 3)

val b = a.keyBy(_.length)

val c = sc.parallelize(List("dog","cat","gnu","salmon","rabbit","turkey","wolf","bear","bee"), 3)

val d = c.keyBy(_.length) operationl

Write a correct code snippet for operationl which will produce desired output, shown below.

Array[(lnt, (String, Option[String]}}] = Array((6,(salmon,Some(salmon))), (6,(salmon,Some(rabbit))),

(6,(salmon,Some(turkey))), (6,(salmon,Some(salmon))), (6,(salmon,Some(rabbit))), (6,(salmon,Some(turkey))), (3,(dog,Some(dog))), (3,(dog,Some(cat))), (3,(dog,Some(dog))), (3,(dog,Some(bee))), (3,(rat,Some(dogg)), (3,(rat,Some(cat)j), (3,(rat.Some(gnu))). (3,(rat,Some(bee))), (8,(elephant,None)))